Arm rest for bike rack



FIG. 1 is a side elevational view of an arm rest for bike rack showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left end elevation view thereof;

FIG. 4 is a right end elevation view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for arm rest for bike rack, as shown. 